Anyone experienced being "out like a light" on this drug?

... I take it at night, and I had taken it last night (as in Sunday night) ... gone to sleep for a nap tonight (Monday night) without taking Monday's dosage...

And I still feel I fell asleep really quickly.

... I dont know... something about this drug doesnt sit well with me. I'm going to phone my shrink tomorrow and see if I can talk to him.